Hartford weather in August 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Hartford in August. Check more long-term weather averages for Hartford in August before you book your next holiday to Connecticut in 2025/2026.

  • 28°C maximum daytime temperature in August in Hartford28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in August in Hartford10
    10 days with some rainfall
  • 16°C minimum night-time temperature in August in Hartford16
    16°C min night temperature
  • 14 hours of daylight per day in August in Hartford14
    14 hours of daylight per day
  • Moderate heat & humidity in August in HartfordM
    Moderate heat & humidity
  • 93 mm monthly rainfall in August in Hartford93
    93 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Hartford8
    8 (Very High) UV index

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The August weather guide for Connecticut (Hartford) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Hartford in August?

Daytime temperatures usually reach 28°C in Hartford in August with moderate heat and humidity, falling to 16°C at night.

How sunny is it in Hartford in August?

There are normally 9 hours of bright sunshine each day in Hartford in August - that's 62% of daylight hours.

Does it rain in Hartford in August?

There are usually 10 days with some rain in Hartford in August and the average monthly rainfall is 93mm.

What is the chance of a hurricane in Hartford in August?

On average less than 1 day in August in Hartford is likely to be affected by the passage of one or more tropical storms.

Hartford August sunrise & sunset times

Browse the sunrise and sunset times for Hartford in August 2025. Select a month to view Hartford sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:45 19:08
Saturday, 16th August 2025 05:01 18:49
Sunday, 31st August 2025 05:16 18:25

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